A multipath mitigation algorithm in Global Navigation Satellite Systems arrays using Independent Component Analysis

it is recognized that Multipath remains as one of dominant source of errors in Global Navigation Satellite System (GNSS) receivers. Independent Component Analysis (ICA) has been widely used as an advanced processing tool for blind suppression of interfering signals in Direct Sequence Spread Spectrum (DSSS) communication systems by utilizing antenna arrays to extract interference signals, but very less literature is available on the performance of ICA in the navigation satellite systems application. We proposed ICA based blind multipath mitigation algorithm for estimation of GNSS multipath components. The proposed algorithm could effectively decompose the received pseudo-range into the independent multipath component and the noise component respectively, and hence provide necessary information about the delay estimation of these multipaths. The effectiveness of this method in multipath environment is demonstrated effectively, which has a better positioning performance over conventional scheme via simulations.